Notating Tied Arpeggios

I've just completed a choral piece with piano accompaniment (posted in the choral/vocal section under this thread: http://www.youngcomposers.com/forum/new-choral-piece-wild-mountain-thyme-19771.html) and a commenter suggested that I remove the ties in the bass clef of the piano part by notating the part in two voices. I've done this, and it's an improvement, but 2 voices aren't enough to get rid of all the ties. Most measures require 3 voices, and several require 4. I'm not sure which notation is best.

I've put together a brief PDF file with several different measures notated with my original notation, then notated as 2 voices, then 3, and in a few of cases 4 voices. I'd really appreciate it if people would take a glance at the different examples--the file is called "Notation"--and let me know your opinion. Or maybe opinions aren't even appropriate? Is there an obvious right or wrong way to notate this? Thanks for any suggestions.

Notation.pdf

Your second variant looks best to me in pretty much all of these cases (i.e. the one with 2 voices). Maybe except measures 18/19/20, where I might prefer the first version, with just one voice, since that's the rhythmically clearest one. And I guess in measures 4-7, the version with three voices is acceptable too.

Generally, splitting it into voices and removing ties can make for a "cleaner" appearance, but it can also obfuscate the rhythmic order of the measure, which can get problematic when you have more than two voices, since then you don't have a clear separation by stem direction anymore (i.e. when you have three or more voices you will have two voices with the stems in the same direction). So generally, I'd keep it to two voices per staff, unless it's really necessary.

(Having many voices over each other also means stuff like pauses closely above and under notes and many possible collisions of elements, which need to be very carefully spaced in order not to look messy.)

I wouldn't even bother with what you've written here.

Simplify it even further.

Write a simple arpeggio, with the notation "con pedal".

If you REALLY must, you can add the LOWEST note of your arpeggio as a long note.

Don't forget, this is a piano part. It's NORMAL to play this type of accompaniment figure with sustain pedal, and for all the notes to be held through the harmony.